Abstract: Disclosed are novel compounds of Chemical Formula 1, optical isomers of the compounds, and pharmaceutically acceptable salts of the compounds or the optical isomers. The compounds, isomers, and salts exhibit excellent activity as GLP-1 receptor agonists. In particular, they, as GLP-1 receptor agonists, exhibit excellent glucose tolerance, thus having a great potential to be used as therapeutic agents for metabolic diseases. Moreover, they exhibit excellent pharmacological safety for cardiovascular systems.

Abstract: An infrared image sensor includes a first integrate circuit (IC), a bolometer disposed on or above one surface of the first IC configured to detect infrared rays passing through a lens module, a via electrically connecting the first IC and the bolometer, and a reflective layer disposed between the first IC and the bolometer, wherein the first IC includes at least one of a read-out (RO) element configured to perform analog processing for the bolometer to generate infrared sensing information and an image signal process (ISP) element configured to perform digital processing based on the bolometer to generate infrared image information, and at least one of an autofocusing (AF) control element and an optical image stabilization (OIS) control element configured to adjust a positional relationship between the lens module and the bolometer.

Abstract: A sensing device with a fingerprint sensor is provided. The sensing device includes a touch input pattern included in the fingerprint sensor, an oscillation circuit connected to the touch input pattern and configured to change a capacitance of the oscillation circuit when a touch occurrence is sensed by the touch input pattern and generate an oscillation signal based on the change in the capacitance, and an operation detection circuit configured to detect a touch occurrence based on a frequency included in the oscillation signal input from the oscillation circuit and generate a detection signal.

Abstract: An infrared image sensor includes a first integrate circuit (IC), a bolometer disposed on or above one surface of the first IC configured to detect infrared rays passing through a lens module, a via electrically connecting the first IC and the bolometer, and a reflective layer disposed between the first IC and the bolometer, wherein the first IC includes at least one of a read-out (RO) element configured to perform analog processing for the bolometer to generate infrared sensing information and an image signal process (ISP) element configured to perform digital processing based on the bolometer to generate infrared image information, and at least one of an autofocusing (AF) control element and an optical image stabilization (OIS) control element configured to adjust a positional relationship between the lens module and the bolometer.

Abstract: A self-checking circuit includes: an edge detector configured to output an edge detection signal having a pulse generated during detection of an edge of a pulse signal having a pulse train; a charging and discharging circuit configured to perform a charging operation and a discharging operation based on the edge detection signal to generate a detection voltage; and a comparison circuit configured to check whether the pulse signal is normal, based on the detection voltage, to output a checking signal.

Abstract: A self-checking circuit includes: an edge detector configured to output an edge detection signal having a pulse generated during detection of an edge of a pulse signal having a pulse train; a charging and discharging circuit configured to perform a charging operation and a discharging operation based on the edge detection signal to generate a detection voltage; and a comparison circuit configured to check whether the pulse signal is normal, based on the detection voltage, to output a checking signal.

Abstract: A touch operation sensing device includes a touch interaction switch integrally formed with a housing and including a conductive first touch member having a first insulated hole, and a sensing coil disposed inside the first touch member. The touch operation sensing device includes an oscillation circuit and a touch detection circuit. The oscillation circuit is configured to generate an oscillation signal having a variable resonance frequency based on a touch capacitance generated by an interaction with a touch body touching the first touch member, the first insulated hole, and the sensing coil. The touch detection circuit is configured to detect a touch interaction using the oscillation signal from the oscillation circuit.

Abstract: A sensing device with a fingerprint sensor is provided. The sensing device includes a touch input pattern included in the fingerprint sensor, an oscillation circuit connected to the touch input pattern and configured to change a capacitance of the oscillation circuit when a touch occurrence is sensed by the touch input pattern and generate an oscillation signal based on the change in the capacitance, and an operation detection circuit configured to detect a touch occurrence based on a frequency included in the oscillation signal input from the oscillation circuit and generate a detection signal.

Abstract: A actuator using a voice coil motor (VCM) method includes a coil configured to face a magnetic member disposed on a lateral surface of a lens carrier, and be spaced apart from the magnetic member, a driving circuit configured to supply a composite current including a driving current and a position detection current to the coil based on a composite voltage input to the driving circuit, and an impedance/digital conversion circuit configured to convert an alternating current (AC) voltage signal including a specific frequency component acquired at opposite ends of the coil via a demodulation scheme, extract a low-frequency signal having an inductance component of the coil, and detect a position signal based on the low-frequency signal.

Abstract: An apparatus for controlling a position of a voice coil motor (VCM) includes a coil disposed to face a magnetic member provided on one surface of a lens carrier; a driving circuit applying a superimposed current, including a driving current and a position detecting current, to the coil; a filter circuit extracting an alternating current (AC) voltage from a voltage across the coil; a voltage/frequency conversion circuit converting the AC voltage extracted by the filter circuit into a frequency signal; and a digital control circuit detecting positional information of the VCM based on a frequency component of the frequency signal.

Abstract: A actuator using a voice coil motor (VCM) method includes a coil configured to face a magnetic member disposed on a lateral surface of a lens carrier, and be spaced apart from the magnetic member, a driving circuit configured to supply a composite current including a driving current and a position detection current to the coil based on a composite voltage input to the driving circuit, and an impedance/digital conversion circuit configured to convert an alternating current (AC) voltage signal including a specific frequency component acquired at opposite ends of the coil via a demodulation scheme, extract a low-frequency signal having an inductance component of the coil, and detect a position signal based on the low-frequency signal.

Abstract: An apparatus for controlling a position of a voice coil motor (VCM) includes a coil disposed to face a magnetic member provided on one surface of a lens carrier; a driving circuit applying a superimposed current, including a driving current and a position detecting current, to the coil; a filter circuit extracting an alternating current (AC) voltage from a voltage across the coil; a voltage/frequency conversion circuit converting the AC voltage extracted by the filter circuit into a frequency signal; and a digital control circuit detecting positional information of the VCM based on a frequency component of the frequency signal.

Abstract: Disclosed herein is a converter including a switching unit, an energy storage unit for storing energy from a direct current (DC) input voltage and then generating an output voltage according to a switching operation of the switching unit, and a switching controller for controlling the switching unit to selectively execute a first operation mode for turning on the switching unit at a fixed frequency or a second operation mode for turning on the switching unit when a voltage between one end and the other end of the switching unit reaches a zero point of a resonance waveform, wherein the switching controller includes an operation mode selection unit for selectively executing the first operation mode or the second operation mode according to whether the voltage between one end and the other end of the switching unit resonates.

Abstract: A power converter may include an inductor, a switch turned on or turned off according to a control signal to control the flow of a current flowing through the inductor, and a control unit for outputting the control signal to turn on or turn off the switch by integrating a current flowing through the switch to compare the integrated current with the size of a preset reference voltage. The power converter and a driving method for the same may reduce errors of current control and have a simple structure.

Abstract: There is provided a power supply apparatus capable of precisely control a primary side switching frequency at a secondary side by receiving fed-back information regarding a power state at the secondary side without a separate expensive circuit or a complicated circuit. The power supply apparatus includes: a power supplying unit having a primary side and a secondary side having different ground electrical characteristics, switching power input to the primary side, and transferring the switched power to the second side electrically insulated from the primary side to supply the power; a controlling unit provided on the secondary side and receiving fed-back information regarding a power state of the power supplying unit to control a maximum value and a minimum value of a switching frequency of the primary side; and a transferring unit transferring a control signal from the controlling unit to the primary side of the power supplying unit.

Abstract: Disclosed herein is a converter including a switching unit, an energy storage unit for storing energy from a direct current (DC) input voltage and then generating an output voltage according to a switching operation of the switching unit, and a switching controller for controlling the switching unit to selectively execute a first operation mode for turning on the switching unit at a fixed frequency or a second operation mode for turning on the switching unit when a voltage between one end and the other end of the switching unit reaches a zero point of a resonance waveform, wherein the switching controller includes an operation mode selection unit for selectively executing the first operation mode or the second operation mode according to whether the voltage between one end and the other end of the switching unit resonates.

Abstract: A converter includes a switching unit; an energy storage unit storing energy from DC input power and then generating an output voltage, depending on a switching operation of the switching unit; and a switching control unit turning on the switching unit when a voltage between one terminal and the other terminal of the switching unit reaches a lowest point of a resonance waveform. The switching control unit includes a voltage detection unit detecting the voltage between the one terminal and the other terminal at the time of the resonance waveform; a first signal output unit outputting a first signal when the voltage detected by the voltage detection unit reaches a change point of a slope corresponding to the lowest point of the resonance waveform; and a switching driving unit turning on the switching unit in response to the first signal.

Abstract: There is provided a light emitting diode power supply apparatus capable of limiting a rise in a voltage level of a power supplied to a light emitting diode even in the case in which driving of the light emitting diode is stopped for a long period of time. The light emitting diode power supply apparatus includes: a power supply unit supplying a driving power set under a control to a light emitting diode; and a controlling unit selecting one of a detection voltage obtained by detecting a current flowing to the light emitting diode and a voltage provided according to an operation state of the light emitting diode to control a power supply operation of the power supply unit.

Abstract: An off signal generator may be capable of supplying a uniform current. The off signal generator may comprise an off signal generation unit outputting an off signal in response to a first signal and blocking the off signal from being output in response to a second signal, and a signal control unit generating the second signal at a preset time interval and transferring the generated second signal to the off signal generation unit.

Abstract: A power converter and a driving method for the same may prevent a current from flowing excessively during initial driving. The power converter may include an inductor, a switch turned on or turned off according to a control signal to control a current flowing through the inductor, and a control unit detecting the magnitude of the current flowing through the switch, outputting the control signal for controlling the turn-on/turn-off operation of the switch, setting a reference current and turning off the switch during a preset first time when the current flowing through the switch reaches the reference current during initial driving.